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Laravel Optional WHERE clause


Laravel Optional WHERE clause

By : Shahzad Sial
Date : January 12 2021, 08:33 AM
wish of those help As per https://laravel.com/docs/5.3/queries#conditional-clauses
code :
->when($request->get('time'), function($query) use ($request) {
     $query->whereTime('datetime', '=', $request->get('time')); 
})


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Yacc expansion of optional clause using the same keyword as following clause

Yacc expansion of optional clause using the same keyword as following clause


By : Mohit
Date : March 29 2020, 07:55 AM
wish of those help By themselves, the above rules don't cause any problems; yacc/bison can handle them just fine with no shift/reduce or reduce/reduce conflicts. Where you might be getting into problems is if start is also a legal expression. If that's the case, the language is ambiguous -- when you have a start within a start, a WHERE might be associated with either one. For example, the input
code :
START RETURN START RETURN expr WHERE expr RETURN expr
START RETURN ( START RETURN expr ) WHERE expr RETURN expr
START RETURN ( START RETURN expr WHERE expr RETURN expr )
Optional where clause

Optional where clause


By : Abhinav Goel
Date : March 29 2020, 07:55 AM
With these it helps Everything you want to know about the subject, and more: Dynamic Search Conditions in T-SQL.
how to write (union inside optional clause) or (optionals with union clause )?

how to write (union inside optional clause) or (optionals with union clause )?


By : Keith Williams
Date : March 29 2020, 07:55 AM
this will help for example to illustrate the issue, I need to query for some companies in sparql in dbpedia, and get their homepages. , In a case like this:
code :
optional {?company foaf:homepage ?website}
optional {?company dbp:homepage ?website}
optional {?company foaf:homepage|dbp:homepage ?website}
Search where clause orWhere clause in Laravel

Search where clause orWhere clause in Laravel


By : user3104277
Date : March 29 2020, 07:55 AM
This might help you Your conditions when you got client and search are not correctly grouped
code :
Contact::when($request->client && $request->search, function ($q) use($request) {
    $q->whereHas('companies', function ($q) use ($request) {
        $q->where('is_client', true);
    })->where(function ($q) use ($request) {
        $q->where('first_name', 'like', '%'.$request->search.'%')
        ->orWhere('last_name', 'like', '%'.$request->search.'%')
        ->orWhereHas('companies', function ($q) use ($request) {
            $q->where('name', 'like', '%' . $request->search . '%');
        });
    });
})->when($request->client == null && $request->search, function ($q) use($request) {
    $q->where('first_name', 'like', '%'.$request->search.'%')
        ->orWhere('last_name', 'like', '%'.$request->search.'%')
        ->orWhereHas('companies', function ($q) use ($request) {
            $q->where('name', 'like', '%' . $request->search . '%');
        });
})->when($request->client && $request->search == null, function ($q) use ($request) {
    $q->whereHas('companies', function ($q) use ($request) {
        $q->where('is_client', true);
    });
})
    ->paginate(30)
$contactQuery = Contact::query();
if ($request->client) {
    $contactQuery->whereHas('companies', function ($q) {
        $q->where('is_client', true);
    });
}

if ($request->search) {
    $contactQuery->where(function ($q) use ($request) {
        $q->where('first_name', 'like', '%'.$request->search.'%')
        ->orWhere('last_name', 'like', '%'.$request->search.'%')
        ->orWhereHas('companies', function ($q) use ($request) {
            $q->where('name', 'like', '%' . $request->search . '%');
        });
    });
}

$contacts = $contactQuery->paginate(30);

Laravel 4: optional wherein clause

Laravel 4: optional wherein clause


By : Sivasankari Kesavan
Date : March 29 2020, 07:55 AM
seems to work fine Basically I have a routing system in Laravel that passes on an optional high level tag name which is used to retrieve a list of tags from a database collection (I am using MongoDB) and use that tag list in turn to retrieve data from another collection. , That's what you're looking for:
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